Rollback Segment Trans

From: Fahd Mirza <fahd-m_at_aero.com.pk>
Date: Wed, 7 Apr 2004 09:14:40 +0500
Message-ID: <0e9f01c41c56$d8daa730$a00100ac@awc.com>

Hi experts,

    I just killed a very long session which wasn't responding and was inactive for 2 days.     The session was performing a delete operation on a table. After I killed the session, I noticed that the size of one rollback segment became very large, the optimal value is 4M and the current size of the particular rollback segment is 500M. I have tried to shrink rollback segment manually like this

alter rollback segment rbs25 shrink to 4M;

but in vain.
what should I do?

    how could it be known that a particular rollback segment is using currently which transactions?

Thanks in advance,
regards.
Fahd

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Received on Tue Apr 06 2004 - 23:12:53 CDT